Now showing items 1-10 of 29
Quantization of Fayet-Iliopoulos parameters in supergravity
(American Physical Society, 2011-04-08)
In this short article we discuss quantization of the Fayet-Iliopoulos parameter in supergravity theories. We argue that, in supergravity, the Fayet-Iliopoulos parameter determines a lift of the group action to a line bundle, ...
The Higgs mass and the emergence of new physics
(Elsevier Science Bv, 2013-07-23)
Multiwavelength campaign on Mrk 509 V. Chandra-LETGS observation of the ionized absorber
(EDP Sciences, 2011-10)
Context. We present here the results of a 180 ks Chandra-LETGS observation as part of a large multi-wavelength campaign on Mrk 509. Aims. We study the warm absorber in Mrk 509 and use the data from a simultaneous HST-COS ...
Multiwavelength campaign on Mrk 509 VIII. Location of the X-ray absorber
(EDP Sciences, 2012-03)
Aims. More than half of all active galactic nuclei show strong photoionised outflows. A major uncertainty in models for these outflows is the distance of the gas to the central black hole. We use the results of a massive ...
Improved measurement of neutral current coherent pi(0) production on carbon in a few-GeV neutrino beam
(Amer Physical Soc, 2010-06-16)
Higgs mass, superconnections, and the TeV-scale left-right symmetric model
(Amer Physical Soc, 2015-02-19)
Direct measurement of backgrounds using reactor-off data in Double Chooz
(American Physical Society, 2013-01-08)
Double Chooz is unique among modern reactor-based neutrino experiments studying (nu) over bar (e) disappearance in that data can be collected with all reactors off. In this paper, we present data from 7.53 days of reactor-off ...
Multiwavelength campaign on Mrk 509 I. Variability and spectral energy distribution
(EDP Sciences, 2011-10)
Context. Active galactic nuclei (AGN) show a wealth of interesting physical processes, some of which are poorly understood. In a broader context, they play an important role in processes that are far beyond their immediate ...
XMM-Newton unveils the complex iron K alpha region of Mrk 279
(EDP Sciences, 2010-03-04)
We present the results of a similar to 160 ks-long XMM-Newton observation of the Seyfert 1 galaxy Mrk 279. The spectrum shows evidence of both broad and narrow emission features. The FeK alpha line may be equally well ...
Simultaneous XMM-Newton and HST-COS observation of 1H0419-577 The absorbing and emitting ionized gas
(EDP Sciences, 2013-08)
In this paper we analyze the X-ray, UV, and optical data of the Seyfert 1.5 galaxy 1H0419-577 with the aim of detecting and studying an ionized-gas outflow. The source was observed simultaneously in the X-rays with XMM-Newton ...